Title (en)

Apparatus for dewatering sludges and similar substances

Title (de)

Vorrichtung zum Entwässern von Schlamm und ähnlichen Substanzen

Title (fr)

Dispositif de déshydratation de boues et substances similaires

Publication

EP 0827767 B1 20001122 (DE)

Application

EP 97114707 A 19970825

Priority

• DE 29614898 U 19960828
• DE 19727762 A 19970701

Abstract (en)

[origin: EP0827767A2] This sludge thickener includes a sludge chamber with a filter surface. This is connected to sludge inlets with equipment producing a hydrostatic pressure for filtration. The sludge chamber is formed by pressure plates, which can be moved to reduce the chamber volume, having reached the hydrostatic dewatering pressure, in order to exert additional mechanical dewatering pressure. There is also a pre-dewatering device containing filtration surfaces and connected to a continuous sludge supply, with which the hydrostatic filtration pressure generator is connected. The filtration surfaces can move relative to the sludge chamber, allowing extraction of the filter cake after opening the pressure plates

IPC 1-7

B01D 29/09; B01D 29/90

IPC 8 full level

B01D 25/12 (2006.01); B01D 29/09 (2006.01); B01D 29/11 (2006.01); B01D 36/02 (2006.01); C02F 11/121 (2019.01); B01D 29/64 (2006.01)

CPC (source: EP US)

B01D 29/096 (2013.01 - EP US); B01D 29/115 (2013.01 - EP US); B01D 29/118 (2013.01 - EP); B01D 29/54 (2013.01 - EP); B01D 29/6415 (2013.01 - EP); B01D 29/6438 (2013.01 - EP); B01D 29/682 (2013.01 - EP); B01D 29/684 (2013.01 - EP); B01D 29/82 (2013.01 - EP); B01D 29/824 (2013.01 - EP); B01D 29/90 (2013.01 - EP); B01D 29/94 (2013.01 - EP); B01D 36/02 (2013.01 - EP US); C02F 11/121 (2013.01 - EP US); B01D 29/6476 (2013.01 - EP US); B01D 29/6484 (2013.01 - EP US); B01D 2201/084 (2013.01 - EP US); B01D 2201/26 (2013.01 - EP US); B01D 2201/34 (2013.01 - EP US)

C-Set (source: EP US)

1. B01D 29/096 + B01D 29/6438 + B01D 29/684 + B01D 29/90 + B01D 29/94
2. B01D 29/115 + B01D 29/118 + B01D 29/54 + B01D 29/6415 + B01D 29/682 + B01D 29/82 + B01D 29/824 + B01D 29/90

Designated contracting state (EPC)

AT CH FI FR GB IT LI NL SE

DOCDB simple family (publication)

US 5961827 A 19991005; AT E197680 T1 20001215; AT E221409 T1 20020815; EP 0827767 A2 19980311; EP 0827767 A3 19980610; EP 0827767 B1 20001122; JP 2007160309 A 20070628; JP 3957828 B2 20070815; JP 4629061 B2 20110209; JP H1085517 A 19980407

DOCDB simple family (application)

US 90698097 A 19970806; AT 97114707 T 19970825; AT 99119992 T 19970825; EP 97114707 A 19970825; JP 2007040581 A 20070221; JP 24488597 A 19970827